A273943 - cp's OEIS frontend

A273943 Put and say how often: a(n) = n/2 if n is even, else a(n) = number of matches of "a(n-1)" in the concatenation of all "a(i)" with i < n, where "x" denotes the decimal string of x.

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	1
8	4
9	1
10	5
11	1
12	6
13	1
14	7
15	1
16	8
17	1
18	9
19	1
20	10
21	1
22	11
23	4
24	12
25	2
26	13
27	1
28	14
29	3
30	15
31	2
32	16
33	2
34	17
35	2
36	18
37	2
38	19
39	2
40	20
41	1
42	21
43	6
44	22
45	5
46	23
47	2
48	24
49	1
50	25
51	2
52	26
53	1
54	27
55	1
56	28
57	1
58	29
59	1
60	30
61	1
62	31
63	4
64	32
65	2
66	33
67	1
68	34
69	1
70	35
71	1
72	36
73	1
74	37
75	1
76	38
77	1
78	39
79	1
80	40
81	1
82	41
83	5
84	42
85	1
86	43
87	3
88	44
89	1
90	45
91	1
92	46
93	1
94	47
95	1
96	48
97	1
98	49
99	1
100	50
101	1
102	51
103	4
104	52
105	4
106	53
107	1
108	54
109	2

[0, 1, 1, 2, 2, 2, 3, 1, 4, 1, 5, 1, 6, 1, 7, 1, 8, 1, 9, 1, 10, 1, 11, 4, 12, 2, 13, 1, 14, 3, 15, 2, 16, 2, 17, 2, 18, 2, 19, 2, 20, 1, 21, 6, 22, 5, 23, 2, 24, 1, 25, 2, 26, 1, 27, 1, 28, 1, 29, 1, 30, 1, 31, 4, 32, 2, 33, 1, 34, 1, 35, 1, 36, 1, 37, 1, 38, 1, 39, 1, 40, 1, 41, 5, 42, 1, 43, 3, 44, 1, 45, 1, 46, 1, 47, 1, 48, 1, 49, 1, 50, 1, 51, 4, 52, 4, 53, 1, 54, 2]

cp's OEIS Frontend

A273943 Put and say how often: a(n) = n/2 if n is even, else a(n) = number of matches of "a(n-1)" in the concatenation of all "a(i)" with i < n, where "x" denotes the decimal string of x.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	1
8	4
9	1
10	5
11	1
12	6
13	1
14	7
15	1
16	8
17	1
18	9
19	1
20	10
21	1
22	11
23	4
24	12
25	2
26	13
27	1
28	14
29	3
30	15
31	2
32	16
33	2
34	17
35	2
36	18
37	2
38	19
39	2
40	20
41	1
42	21
43	6
44	22
45	5
46	23
47	2
48	24
49	1
50	25
51	2
52	26
53	1
54	27
55	1
56	28
57	1
58	29
59	1
60	30
61	1
62	31
63	4
64	32
65	2
66	33
67	1
68	34
69	1
70	35
71	1
72	36
73	1
74	37
75	1
76	38
77	1
78	39
79	1
80	40
81	1
82	41
83	5
84	42
85	1
86	43
87	3
88	44
89	1
90	45
91	1
92	46
93	1
94	47
95	1
96	48
97	1
98	49
99	1
100	50
101	1
102	51
103	4
104	52
105	4
106	53
107	1
108	54
109	2

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	1
8	4
9	1
10	5
11	1
12	6
13	1
14	7
15	1
16	8
17	1
18	9
19	1
20	10
21	1
22	11
23	4
24	12
25	2
26	13
27	1
28	14
29	3
30	15
31	2
32	16
33	2
34	17
35	2
36	18
37	2
38	19
39	2
40	20
41	1
42	21
43	6
44	22
45	5
46	23
47	2
48	24
49	1
50	25
51	2
52	26
53	1
54	27
55	1
56	28
57	1
58	29
59	1
60	30
61	1
62	31
63	4
64	32
65	2
66	33
67	1
68	34
69	1
70	35
71	1
72	36
73	1
74	37
75	1
76	38
77	1
78	39
79	1
80	40
81	1
82	41
83	5
84	42
85	1
86	43
87	3
88	44
89	1
90	45
91	1
92	46
93	1
94	47
95	1
96	48
97	1
98	49
99	1
100	50
101	1
102	51
103	4
104	52
105	4
106	53
107	1
108	54
109	2

n	a(n)
0	0
1	1
2	1
3	2
4	2
5	2
6	3
7	1
8	4
9	1
10	5
11	1
12	6
13	1
14	7
15	1
16	8
17	1
18	9
19	1
20	10
21	1
22	11
23	4
24	12
25	2
26	13
27	1
28	14
29	3
30	15
31	2
32	16
33	2
34	17
35	2
36	18
37	2
38	19
39	2
40	20
41	1
42	21
43	6
44	22
45	5
46	23
47	2
48	24
49	1
50	25
51	2
52	26
53	1
54	27
55	1
56	28
57	1
58	29
59	1
60	30
61	1
62	31
63	4
64	32
65	2
66	33
67	1
68	34
69	1
70	35
71	1
72	36
73	1
74	37
75	1
76	38
77	1
78	39
79	1
80	40
81	1
82	41
83	5
84	42
85	1
86	43
87	3
88	44
89	1
90	45
91	1
92	46
93	1
94	47
95	1
96	48
97	1
98	49
99	1
100	50
101	1
102	51
103	4
104	52
105	4
106	53
107	1
108	54
109	2